Crystal nucleation in liquids and glasses
WebSep 29, 2024 · In the application of classical nucleation theory (CNT) and all other theoretical models of crystallization of liquids and glasses it is always assumed that nucleation proceeds only after the supercooled liquid or the glass have completed structural relaxation processes towards the metastable equilibrium state. WebJan 1, 1991 · CRYSTAL NUCLEATION IN LIQUIDS AND GLASSES 135 of samples quenched at different rates, the nucleation and growth rates were determined to obtain an estimate of the interfacial energy between the icosahedral phase and the … Journal of Non-Crystalline Solids 79 (1986) 295-309 295 North-Holland, Amsterdam … Journal of Non-Crystalline Solids 73 (1985) 477-499 a77 North-Holland, Amsterdam … Later Frenkel5) and Zeidovich6) considered nucleation as a non-steady state … On the peculiarities of nucleation of the crystalline phase in glasses, in: Prob- … This paper is a report of some studies leading to a new mathematical … Similar formulae may be derived to account for phase invariance or other … The results tying liquids, the main experimental difficulty is the which have … Thermodynamic conditions for the formation of metastable phases from undercooled … Kinetics of clustering processes that involve monoatomic addition or subtraction of … Journal of Crystal Growth 52 (1981) 115-121 cQ North-Holland Publishing …
Crystal nucleation in liquids and glasses
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WebJul 7, 2024 · The glass formation ability of an alloy depends on two competing processes: glass-transition, on one hand, and crystal nucleation and growth, on the other hand. … WebFeb 1, 2024 · We present an overview of the basic phenomena and key theoretical concepts of crystal nucleation and growth in glass-forming liquids. Theoretical predictions of …
WebIt has been found that for a large number of polymers [48,54,55,63,64,65], but also for small molecules , there is a well-defined sequence of enthalpy relaxation/densification of the glass [67,68], homogeneous crystal nucleation and crystal growth. A possible explanation of this observation is that the cooperative rearrangements of mobile short ...
WebDec 3, 2024 · Crystal nucleation in a supercooled liquid typically attains its maximal rate near the glass transition temperature Tg and slows down with further cooling, becoming … WebMar 16, 2024 · It presents an update on the recent developments concerning the mechanisms of nucleation, crystal growth and phase separation, bringing together theoretical aspects and characterization methods. It also covers current and future applications of a large variety of glass-ceramics. The book comprises three main parts.
WebNov 1, 2024 · Theoretically, liquid-liquid phase separation could influence crystal nucleation in several ways, but most of the possibilities fall into two main categories associated with either: i) the different compositions of the separating liquid phases, or with ii) the interfaces between the glassy phases.
WebSupporting: 6, Mentioning: 30 - Crystal nucleation and growth processes induced by an externally applied shear strain in a model metallic glass are studied by means of nonequilibrium molecular dynamics simulations, in a range of temperatures. We observe that the nucleation-growth process takes place after a transient, induction regime. The … poodle in spanishWebAug 14, 2024 · ABSTRACT: Crystal nucleation plays a critical role in the stability of supercooled liquids and glasses and is often controlled through addition of polymers. A … poodle images freeWebThis method, developed by Gustav Tammann (Tammann’s method) more than 100 years ago to measure crystal nucleation rate in organic liquids (Tammann G. Z Phys Chem 25:441, 1898), was successfully applied to inorganic glasses for the first time by Ito et al. (Ito M, Sakaino T, Moriya T. Bull Tokyo Inst Technol 88:127, 1968) and Filipovich and ... poodle inner ear hair removalWebJul 27, 2010 · The classical nucleation theory (1–3) considers these initial homogeneous disordered liquid and final ordered crystal phases as the only key players of … poodle in adopt meWebDec 3, 2024 · Crystal nucleation in a supercooled liquid typically attains its maximal rate near the glass transition temperature Tg and slows down with further cooling, becoming exceedingly slow in the glassy ... poodle informationWebMay 26, 2016 · The three snapshots depict a crystalline cluster nucleating within the supercooled liquid phase (homogeneous nucleation) or as a result of the presence of a foreign impurity (heterogeneous nucleation), as well as the simultaneous occurrence of multiple crystalline clusters in the unstable liquid. poodle information sheetWebJan 19, 2024 · Here, we analyze the validity of this hypothesis for a model system by studying nucleation in a lithium silicate glass treated for very long times (up to 250 days) in deeply supercooled states,... poodle iron on patch